Map method in javaScript

 

Map() method:-

• Creates a new array for calling function for all array element
• Calls a function once for every element
• Does not execute the function for empty element
• Does not change the original array

Syntax:-

array.map(function( currentValue, index, arr), thisValue )

function()           :-    a function to be run for all element

currentValue    :-    value of current element

index                      :-     index of current 

arr                           :-    holds the array

thisValue              :-    default value passed to the function to be used as its this value.